Verse Ex05-16b discussing the greater taxing work that the Jews were given by Pharoh states There is no straw given unto thy servants, and they say to us: Make brick; and, behold, thy servants are beaten, and your nation has become [a paradigm of] fault.

Rashi on the above passage states: There are two ways of interpreting this verse.
• We can interpret using a construct: and this (the lack of production) is considered the fault of your nation of slaves.
• We can interpret it without using a construct: and this (the lack of production) makes your nation [a paradigm of] fault.
Since the Komatz vowel is used rather than the patach vowel (Chototh vs. Chatath) we infer that a non-construct is intended.

Advanced Rashi: But it is the construct interpretation - this lack of production is the fault of ourselves - that makes sense. What sense does the non-construct mean - we are fault. I have interpreted this to mean we have become the paradigm of fault. Thus a person who wanted to criticize a fellow person would rank him out you are a Jew by which he means you are full of faults. Such identifications of people with their attributes is a powerful poetic technique: Perhaps the most famous example is P109-04, in which King David says I am prayer. That is, instead of saying I am a person who prays King David says I am prayer. In a similar manner the Jews say we are fault which has a similar construction to I am prayer. Here the Jews indicate that they have become a paradigm of ridicule and fault.